Electrical resistivity of one-dimensional quasiperiodic η8-Cu5Sn4

The electrical resistivity, ρ, of one-dimensional quasiperiodic η8-Cu5Sn4 has been studied, and compared with crystalline Cu6Sn5 of identical basic structure (B8) and closely related atomic structure. ρ was measured between 1.5 and 300 K on needle-shaped crystals with their axes along the base lattice c direction, corresponding to the quasiperiodic direction in η8-Cu5Sn4. ρ (4 K) was found to be nine times larger in η8-Cu5Sn4 compared to Cu6Sn5, and the residual ratio R [=ρ(4K)/ρ(300K)<1] was larger by a factor of 3. The similar structures and these large differences in transport properties indicate that the effect of quasiperiodic ordering has been observed in the resistivity of a one-dimensional metal